79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
/*
|
|
* \brief Nitpicker mouse cursor
|
|
* \author Norman Feske
|
|
* \date 2006-08-18
|
|
*
|
|
* The Nitpicker mouse cursor is implemented as a transparent
|
|
* view that stays always in front of all other views.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _MOUSE_CURSOR_H_
|
|
#define _MOUSE_CURSOR_H_
|
|
|
|
#include <nitpicker_gfx/chunky_canvas.h>
|
|
|
|
#include "view.h"
|
|
#include "session.h"
|
|
|
|
template <typename PT>
|
|
class Mouse_cursor : public Chunky_texture<PT>, public Session, public View
|
|
{
|
|
private:
|
|
|
|
View_stack const &_view_stack;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*/
|
|
Mouse_cursor(PT const *pixels, Area size, View_stack const &view_stack)
|
|
:
|
|
Chunky_texture<PT>(pixels, 0, size),
|
|
Session("", *this, 0, BLACK),
|
|
View(*this, View::STAY_TOP, View::TRANSPARENT, View::NOT_BACKGROUND,
|
|
Rect()),
|
|
_view_stack(view_stack)
|
|
{ }
|
|
|
|
|
|
/***********************
|
|
** Session interface **
|
|
***********************/
|
|
|
|
void submit_input_event(Input::Event) { }
|
|
|
|
|
|
/********************
|
|
** View interface **
|
|
********************/
|
|
|
|
/*
|
|
* The mouse cursor is always displayed without a surrounding frame.
|
|
*/
|
|
|
|
int frame_size(Mode const &mode) const { return 0; }
|
|
|
|
void frame(Canvas &canvas, Mode const &mode) const { }
|
|
|
|
void draw(Canvas &canvas, Mode const &mode) const
|
|
{
|
|
Clip_guard clip_guard(canvas, *this);
|
|
|
|
/* draw area behind the mouse cursor */
|
|
_view_stack.draw_rec(view_stack_next(), 0, 0, *this);
|
|
|
|
/* draw mouse cursor */
|
|
canvas.draw_texture(*this, BLACK, p1(), Canvas::MASKED);
|
|
}
|
|
};
|
|
|
|
#endif
|